3800 sounds pretty high to me. Sure it'll be fine but it's a lot of gas burned and extra wear on the engine. If it needs to rev that high to make the torque to maintain a steady speed then that's what it needs, but if not I'd try to drop the RPM a bit. Generally I like to cruise at 3000 RPM or less. Not much comparison but my beater is at about 2400-2500 RPM at 22 MPH or so (where I like to ride). What size engine and what ratio transmission do you have? If it's a 350 Chevy I wouldn't expect it to need to rev that high unless you're seriously weighted down.

A small block Chevrolet like yours will run at 3800 all day but you would be better below 3500.
The bigger problem might be the wedge at 24 mph. You've got a huge downfoce at that speed so you'll have high prop slip. That would be why your rpm is so high.
Try running that speed with no load and see what the rpm is.

I would not run a prop with less than 14" of pitch on any modern V-drive. The blade shape of an OJ is slightly different, might call Eric Johnson, he's been known to let guys try props from time to time. I ended up keeping my Acme but that was for non-wakeboarding reasons. You can also get Acme props cut to different cup tolerances, a bigger cup will reduce your rpms.

I called Indmar and they told me that there should be no concern in running the boat at 3800 rpms as long as I do not exceed 5200 at any point in the pick-up. In fact, he said that running a lower RPM under such a load will cause more problems.

The biggest problem he sees is with boats that spend most of their time wakesurfing.